Put the verbs into the past perfect or the past perfect

Put the verbs into the past perfect or the past perfect continuous. They _____________________________(travel) all night and were exhausted. We _____________________________(book) our flight weeks before we left. They __________________________(wait) for hours before their flight was announced. Lionel _________________________ (already/be) to Nepal twice before he got married. How long ____________________________(you/ look) for Jess before you found him? The guide ___________(organise) everything well in advance, so our trip went smoothly. They ___________________________(look forward) to this holiday for years before they finally managed to do it. It ___________________________(snow) for hours and no plane were able to take off.